Improvement in plows



W. S. LAWRENCE.

PLOW.

No. 188,019. Patented March 6,1877.

.19 ii 0 st IMM. (SM/ 66W UNITED STATES PATEN WILLIAM S. LAWRENCE, OFKALAMAZOO, MICHIGAN.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 188,019, dated March 6.1877; application filed January 29, 1877.

To all whom it may concern:

Be it known that 1, WILLIAM S. LAW- RENGE, of Kalamazoo, in the countyof Kalamazoo and State of Michigan, have invented a new and usefulImprovement in Plows, which is fully described in the followingspecification, reference being had to the accompanying drawings, inwhich- Fig re 1 represents a side elevation of a plow on the land-sideof the implement with my improvement attached; Fig. 2, a side elevationof a jointer, and Fig. 3 a detailed view of the upper portion of thestandard on an enlarged scale.

The object of my invention is to provide a convenient device forattaching a colter or jointer to the plow in such a manner that it maybe easily adjusted without disturbing its alignment.

The invention consists in constructing the standard of the plow with aninclined recess on the land-side thereof, in which is fitted a bent arm,carrying upon its outer end a colter or jointer, and adjustable back andforth in the inclined recess in the standard.

In the drawings, A represents the landside of a plow, and B the colter,which is fitted to the land-side, as shown in Fig. l of the drawings.The standard 0 is provided with a shoulder, c, which fits over the underedge of the colter on the land-side of the plow. Just above the shoulderc a recess or groove, 0 is made in the standard on the same side of theimplement. This recess or groove is cut inclining upward from rear tofront, as shown in Fig. 3 of the drawings, and is made deep enough toreceive and hold the rear end of a bar, D. This bar or arm D is straightfor some distance at its rear end, and is then bent downward, the bendbeing preferably on a curve, as shown in the drawings, although, ifdesired, it may be angular. On the forward end of the bar is a colter,E, or a jointer, F, as may be desired, and the bend of the bar is suchthat the line of cut in either case is very nearly parallel with thetrue incline of the front or cutting edge of the plow, as shown in Fig.l of the drawings.

The rear end of the bent arm D is provided with a series of holes, 01,through which a bolt, 1), passes and extends through a hole in thestandard 0 and thus secures the bent arm rigidly to the standard.

To adjust the position of the colter or jointer, it is only necessary toremove the bolt b and push the arm D forward or backward Within theinclined recess, and insert the bolt again in another of the holes 01.

It is evident that whenever the the arm is adjusted forward in this waythe colter or jointer will be raised, as shown in dotted lines in Fig. 1of the drawings, while at the same time the angle at which it ispresented to the ground will not be changed, or its relative alignmentwith the front edge of the plow.

The adjustment of the arm in the opposite directions will, of course,lower the colter or jointer, to make it out deeper, and the adjustmentmay be made by a slot in the arm instead of holes.

By this invention I am enabled to attach the jointer or colter to theplow-standard below the beam, thereby obviating the difficulty ofclogging, which is serious when the colter or jointer is attached to thebeam; and I am also enabled to readily adjust the height of the colteror jointer, so as to regulate its depth of cut, and at the same timemaintain its angle of presentation to the ground or cutting-angle.

It is obvious that the bent arm will be the same, whether it carries atits forward end a colter or a jointer, the only difference being that,in the latter case, the extreme lower end must be adapted for theattachment of the jointer.

When constructed as described, and shown in the drawings, either thecolter or jointer may be easily removed with the arm, and the othersubstituted at pleasure.

Having thus described my invention, what I claim as new, and desire tosecure by Let ters Patent, is-

1. The standard 0, provided with a recess or groove, 0 upon theland-side thereof, inclined downward from front to rear of the FFICE.

jointer, substantially as and for the purpose set forth.

WILLIAM S. LAWRENCE.

Witnesses:

GEo. W. THOMPSON, LESLIE S. DODGE.

